Metal mold for sash-weights



(No Model.)

0. E. STEVENS, METAL MOLD FOR SA$H WEIGHTS.

Patented Jan. 25, 1887.

1 v2! [3 M ZH' wW M Unrrnn STATES Reruns @rrrcn CHARLES E. STEVENS, OF EAST SOMERVILLE, MASSACHUSETTS.

METAL MOLD FOR SASH=WEEGHTS.

QPBCIPICATION forming part of Letters Patent No. 356,736. dated January 25, 1887.

Application filed March 25, 1836. Serial No. 156,013. (No model.)

To aZ/Z whom it may concern-.-

Be it known that I, (hmRLns E. S'rnvnus, of East Soinerville, in the county of Middlescx and State of Massachusetts, have invented 5 certain new and useful Improvements in Metaliic Molds, of which the following is especineat-ion.

My invention relates to molds or moldboxes for casting metal, and particulolrlyto such orticles designed for casting window and sash balance-weights, and has for its object to so improve the construction of such mold or inoldboxes as to render them more serviceable and to enable the ports most quickly destroyed or cut away by the molten metal to be readily removed and replaced by a. new port, thus greatly prolonging the life of the mold and saving considerable expense to the user thereof.

0 My present invention is an improvement on the mold shown and described in the application filed by 3.118 in the United States Patent Shine on the 7th day of December, 1885, to which application reference may be had, said improvements consisting in constructing each mold or pattern-cavity of the box so as to give it direct communication with the pouringgste, and in o construction whereby the parts at the pouring-gate first met by the molten 0 metal are made readily removable, so that they can be taken out and replaced by new parts after having become damaged by use, as they quickly will be, thus obviating the me cessity of frequently making an entirely new mold or mold-box, as would be the case with out such provision as is made in my invention.

In the drawings hereto annexed, and forming a port of this specification, Figure 1 represents a top plan view of the lower half or section of the mold-box. 2 represents a bottom plan View of the upper huli'of the box. hi 3 is a longitudinal vertical section of the entire box on the line :v as of Fig. 1.

Similar letters of reference indicate corresponding parts in all the figures.

o designates the upper section of my mold box, and Z) the lower section. Each of said sections is provided with substantially onehalf of the molds or pattern-cavities a, so that when the two parts are pieced together and properly centered a series of complete puttern-cavities will be formed. In the present instance I have represented five such patterncevitics, though my invention is not limited to any particular number in a single mold or mold-box.

As shown, my invention, as here disclosed, is designed for the casting of window and sash balance-weights. The same is described in my said application, and where the parts and few tures of the present invention are similar to those of the mold described in the said application they are designated by the same letters of reference.

h represents ribs formed on the lower section of the box, designed for forming a slot; in the weight leading from the eye to the top thereof, forming a slot in which the suspending-cord of the weight may rest to protect it from wear or abrasion.

f represents air vents or exhausts at the lower end of the boX-one for each mold or pattern-cavity. The ribs 11. and alir-vents j are bot-h features of the lower section, b.

7 represents studs formed on the upper section, and adapted, when the two sections are placed together, to rest on the upper or forward end of rib h, for the purpose of forming the eye in the weight.

j represents passages formed in the upper section, a, and communicating with the pettern-csviiies c and air-ventsf, thereby providing ouch cavity or mold with a vent.

The parts and features just described are similar to those shown and described in my beforenientioned application.

A. represents the pouring hole or gate for the entrance of the molten metal, which gate communicates directly, by means of passages B, with each pattern-cavity or mold a. K

The parts or surfaces immediately at the pouring-hole ere mode removable from the main or body portion. The removable portion 0 in the lower sect-ion, b, iswedge-shaped in form, as viewed from the top, and the side edges thereof are inclined, so as to fit correspondingly-inclined or dovetail groove formed in said last-mentioned section. The forward end of said removable portion 0 is provided with a, flange, l), resting against the forward end of the mold. Projecting from the lower edge of the forward end of lower section, b, is

ICO

a bolt, E, projecting through a hole or slot in the lower edge of flange D, upon which is a nut, F, to hold said removable portion 0 in place of the lower section.

G represents the removable portion of the gate connected with the upper section, a. Said portion G includes that portion of section (0 immediately surrounding the pouring hole or gate A, and is formed as though a portion of said section around said hole were sawed or cut out and again set or affixed therein by being provided with a laterally -extending flange, H, resting upon the upper surface of upper section, a. I

By my improvements the portions 0 and G of the mold can readily be removed when they become impaired from use, and new and perfeet parts can readily be secured in their places.

Having thus described my improvements, I claim-- 1. A metallic mold for casting window and sash balance-weights, consisting of the lower section, I), provided with a wedge-shaped dovetail groove, the removable portion O,having a wedge-shaped dovetail form to fit the groove formed in said section and provided with a flange, D, adapted to rest against the forward part of the mold, devices for securing said flange to the mold, the upper section, a,

provided with a recess, and the removable portion G, formed to fit said recess and provided with the flange H, as set forth.

2. A metallic mold for casting window and sash balance-weights, consisting of the sections a I), provided with aplurality of patterneavities, each provided at one end with an airvent, f, the removable pouringgate at the opposite end consisting of the parts 0 G, the pouring-gate communicating directly with each pattern-cavity, as set forth.

3. A metallic mold for casting window and sash balanceweights, consisting of the sections to b, provided with a plurality of patterncavities, the removable pouring-gate comprising the parts 0 G, the former provided with the flange D and the latter with the flange H, devices for securing the flange D to the forward part of the mold, passages B,connecting the pouring-gate with each pattern-cavity, and each patterncavity being provided at the end opposite the pouring-gate with an individual air-vent, f, as set forth.

In testimony whereof I have signed my name to thisspeciflcation, in the presence oftwo subscribing witnesses,this 23d day of March, 1886.

CHARLES E. STEVENS. \Vitnesses:

ARTHUR WV. CRossLEY, G. F. BROWN. 

